Measuring device



G. R. RADLEY. MEASURING DEVICE, APPLICATION FILED FEB. 14. 1921.

Patented Mar. 21,1922.

Ir: I! I GUY 11-; 'BADEAEI,

ero 1.

fippi'ica'tion filed 'Ecmuery 114i, i -1911. iicrisl zoo. Mar-co To all to from may concern Be it known that l, GUY R. RADLEY iZ citizen of the llnitccl States resiclin r at Mi 3 county 0t lviilwanirec and \vaukec, in the State of Wisconsin, have invented new and useful Improvements in ivieasuring Devices of which the following is a full, cieer, concise, and exact description, reference being had to the accompanying drawing, forming a. part of this specification The invention relates to measuring (levices and more particularly to energy measuring ievices having on indicating eicn'ient associated theren it-h.

Such devices are sometimes employed in controi systems to make or break an electric circ'u 2 when the energy measured by the (i8- vice is a given value, in certain systems it is ri'emrahle to automatically vary in accordance with temperature variations the range of operation of the device required for eficcting the desired control and the present invention has among its measuring device of the et'oreseid charactor Wl'ierein the indicating element may function for indication independently of temperature changes,

Another object '3 to provide a device of the a i'oreeaid character having cooperating contacts controlled by the indicating element thereof, the relative position of said contacts being varied hy temperature variations.

Various other objects and advantages of the invention will hercinattcr appear.

The accompanying drawing illustrates one form which the invention may assume in p notice and the same will now he described it being iunlerstoorl that the invention may be embodied in numerous other forms with" out dc 'iartingg' from the scope of the appended claims.

Referring to the drawing the same illustrates an electrical measuring device of the DArsonval type including a permanent magnet 'l having pole faces 2 anti Eh a mov ing coil 4r arranged between said faces and carried by a pivoted. supporting member The supporting member is connected to an indicating member- 6 which is movable over a scale 7 and said supporting member is biased towards the zero position shown by oppositely arranged spiral springs 8 and 9 which are respectively connected to opposite terminals of coil 4. As is understood the moving coil 4 is supplied with current specification of Letters Potent,

objects to provide through s rings 8 anti 9 enrlthe same re epomis vary the position of the indica'iin n iemher 6 in accordance with the value oi the current supplied thereto.

.ihe measuring device provided with contacts 30 enri 11 for controlling a circuit indicate/cl by lines L and L, the former contact being mounted on indicating member *3 and the latter contact being carried or a thermostatic element 12. The toerinostiitic elementcomprises a verticailvarranged oi-- metal ic st: braving the contact 11 secured thereto adjacent the upper end thereof and. having its .io ver end anchored by a screw 13 to en nisuiatmg block 1 mounted on magnet 1. The upper enii oi the thermostatic eleznent ifi is errengect adjacent scaie 'Z {or iii cheating purposes and said element has an ari usting screw 15 passing therethroagh anal threaded into block M for adjusting "the position of the upper end thereof with 'rcepect 'Z.

As is Weil known the thermostatic element '12 bends in response to thermic variations and the Wiil theretorc vary the position of contact 11 with respect to con tact 10 and correspondingly va y the tiegree of energization of coil necessary to closure of contacts 10 and 11. The direction in which the thermostatic element 12 bends in response to thermic conditions is dependent upon the relative position of the strips thereof and it is thus apparent that by reversing said strips the regulating charzutteristics of said element can be re versed l i hat 1 claim is new and desire to secure by Letters Potent is:

l. The combination with a device arlaptcrl to measure energy supplied thereto, seirl device he ving an indicating eieiiient responsive to an extent varying in accordance with the alue of the energy suppiierl to sari-1i rlevice, oi cooperating contacts to be engaged and disengaged as a function the movement ot said element anriimcans sensitive to tempcrature changes for automatically varying the extent of movement of said eicment required to effect it given change in the rel2ition of sairl contacts.

2. T he combination with a (,evice adapted to measure energy supplied thereto, saicl device having an indicating element responsive to an extent varying in accordance with the value of the energy supplied to said device, no

acts in cios-cd hy said upon respousa thereof, ant; associaicd with aiiy varyx; m d contacts for union: ipho omani of mommoncof said indicatoi guired. to afl'ec't closure of said commas.

3 The combination with device adapted measure size/r33 supplied thereto, said an"; indicating sicnioid responai; varying in accordance with worg supplied to said dccoiifiact carried by said indicating contact to he engaged by said to davic-e havi BiVB an e the "-aziine of who ice, of a sieniant forms-i commit-upon rosponse of said indiiaiai g element, and

a iTilLiIHi'JSiZii'it civmont with said maico'nixcci to vary he psiigion thereof THC}! i'cspcct in said Iormer Contact in accoz'dancc wii'i: tempera- Eur-e changes.

The comhii'iaion with a device asn'is enorgy supplied i: zsving an indiciiii'ig a I to an aiming varying in accordance with adapicd ieio 'o, said do cm-eizt rcupon i'hc vainc of the energy suppiicd to said dc- \'ico, a contact carricd by said iiniicai'ing clw nicnt, a coutach i0 hc cngagg'cd hy said fOIlllifi. cindact, upon rospousc oi said indicating c1cnicni. a bimetallic supporting strip for said latter contact and nicans for adjusting said strip with i'cspcci to said indicating 0h mcni. V

5. Thu combination with a device adapted to uicasui'c cnci'g'y suppiicd thereto, said do vicc having an indicating clement rcsponsivc to an cxtont moving in :wcoi-dancc with ihc value of the energy suppiicd to said dc vice, and an indicaiing scale of a contact cai'ricd by said indicating clement, a coutact io he clip-aged h said fol-nun contact upon icsponsc of said indicating oicincui, and a hiinctaiiic supporting strip for said iaiiici" contact. said strip being arranged adjacent said scale for indi Ming) purposes.

wiincss whci'cof. I have hereunto suhscribed my ianie,

GUY R-i-LD'LEY, 

